No doubt he’s selling because he recently dropped $40 million on the Brentwood estate of Gisele Bundchen, supermodel and actress, and her husband, New England Patriots quarterback Tom Brady.

The rapper closed on that four-acre estate two days after Apple Inc. officially announced it had acquired Beats, the company he cofounded with Interscope Geffen A&M Chairman Jimmy Iovine, for $3 billion.

In addition to cofounding Beats, Dr. Dre, 49, is the founder and chief executive of Aftermath Entertainment.

The Grammy winner and record producer bought the property in 2011 for $15.4 million. He has worked with Snoop Dogg, Eminem and 50 Cent, among others.

After a salary-cap-purging wave of cuts the past week, eight remaining Dolphins find themselves on the bubble this offseason as the Dolphins' front office pushes to create more cap space with the goal of renovating the roster for a much-needed playoff push in what could be Joe Philbin's final...